According to Kevin Fetter on the SEESAT newsgroup, the first AEHF communications satellite is scheduled for launch tomorrow Aug 14 between 1106-1306 UTC.I have complete details on this satellite in a previous post here on the MMP at
http://mt-milcom.blogspot.com/2010/08/aehf-1-milsat-may-launch-next-week.html
You can download the launch mission book in pdf at http://www.ulalaunch.com/site/docs/missionbooklets/AV/av_aehf1_mob.pdf
There will be a webcast of the Atlas launch at http://mfile.akamai.com/29730/live/reflector:58048.asx?bkup=58227